Loading...
1/*
2 * linux/arch/arm/mach-pxa/generic.c
3 *
4 * Author: Nicolas Pitre
5 * Created: Jun 15, 2001
6 * Copyright: MontaVista Software Inc.
7 *
8 * Code common to all PXA machines.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 *
14 * Since this file should be linked before any other machine specific file,
15 * the __initcall() here will be executed first. This serves as default
16 * initialization stuff for PXA machines which can be overridden later if
17 * need be.
18 */
19#include <linux/gpio.h>
20#include <linux/module.h>
21#include <linux/kernel.h>
22#include <linux/init.h>
23
24#include <mach/hardware.h>
25#include <asm/mach/map.h>
26#include <asm/mach-types.h>
27
28#include <mach/irqs.h>
29#include <mach/reset.h>
30#include <mach/smemc.h>
31#include <mach/pxa3xx-regs.h>
32
33#include "generic.h"
34#include <clocksource/pxa.h>
35
36void clear_reset_status(unsigned int mask)
37{
38 if (cpu_is_pxa2xx())
39 pxa2xx_clear_reset_status(mask);
40 else {
41 /* RESET_STATUS_* has a 1:1 mapping with ARSR */
42 ARSR = mask;
43 }
44}
45
46unsigned long get_clock_tick_rate(void)
47{
48 unsigned long clock_tick_rate;
49
50 if (cpu_is_pxa25x())
51 clock_tick_rate = 3686400;
52 else if (machine_is_mainstone())
53 clock_tick_rate = 3249600;
54 else
55 clock_tick_rate = 3250000;
56
57 return clock_tick_rate;
58}
59EXPORT_SYMBOL(get_clock_tick_rate);
60
61/*
62 * For non device-tree builds, keep legacy timer init
63 */
64void __init pxa_timer_init(void)
65{
66 if (cpu_is_pxa25x())
67 pxa25x_clocks_init();
68 if (cpu_is_pxa27x())
69 pxa27x_clocks_init();
70 if (cpu_is_pxa3xx())
71 pxa3xx_clocks_init();
72 pxa_timer_nodt_init(IRQ_OST0, io_p2v(0x40a00000),
73 get_clock_tick_rate());
74}
75
76/*
77 * Get the clock frequency as reflected by CCCR and the turbo flag.
78 * We assume these values have been applied via a fcs.
79 * If info is not 0 we also display the current settings.
80 */
81unsigned int get_clk_frequency_khz(int info)
82{
83 if (cpu_is_pxa25x())
84 return pxa25x_get_clk_frequency_khz(info);
85 else if (cpu_is_pxa27x())
86 return pxa27x_get_clk_frequency_khz(info);
87 return 0;
88}
89EXPORT_SYMBOL(get_clk_frequency_khz);
90
91/*
92 * Intel PXA2xx internal register mapping.
93 *
94 * Note: virtual 0xfffe0000-0xffffffff is reserved for the vector table
95 * and cache flush area.
96 */
97static struct map_desc common_io_desc[] __initdata = {
98 { /* Devs */
99 .virtual = (unsigned long)PERIPH_VIRT,
100 .pfn = __phys_to_pfn(PERIPH_PHYS),
101 .length = PERIPH_SIZE,
102 .type = MT_DEVICE
103 }
104};
105
106void __init pxa_map_io(void)
107{
108 debug_ll_io_init();
109 iotable_init(ARRAY_AND_SIZE(common_io_desc));
110}
1/*
2 * linux/arch/arm/mach-pxa/generic.c
3 *
4 * Author: Nicolas Pitre
5 * Created: Jun 15, 2001
6 * Copyright: MontaVista Software Inc.
7 *
8 * Code common to all PXA machines.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 *
14 * Since this file should be linked before any other machine specific file,
15 * the __initcall() here will be executed first. This serves as default
16 * initialization stuff for PXA machines which can be overridden later if
17 * need be.
18 */
19#include <linux/gpio.h>
20#include <linux/module.h>
21#include <linux/kernel.h>
22#include <linux/init.h>
23
24#include <mach/hardware.h>
25#include <asm/mach/map.h>
26#include <asm/mach-types.h>
27
28#include <mach/reset.h>
29#include <mach/smemc.h>
30#include <mach/pxa3xx-regs.h>
31
32#include "generic.h"
33
34void clear_reset_status(unsigned int mask)
35{
36 if (cpu_is_pxa2xx())
37 pxa2xx_clear_reset_status(mask);
38 else {
39 /* RESET_STATUS_* has a 1:1 mapping with ARSR */
40 ARSR = mask;
41 }
42}
43
44unsigned long get_clock_tick_rate(void)
45{
46 unsigned long clock_tick_rate;
47
48 if (cpu_is_pxa25x())
49 clock_tick_rate = 3686400;
50 else if (machine_is_mainstone())
51 clock_tick_rate = 3249600;
52 else
53 clock_tick_rate = 3250000;
54
55 return clock_tick_rate;
56}
57EXPORT_SYMBOL(get_clock_tick_rate);
58
59/*
60 * Get the clock frequency as reflected by CCCR and the turbo flag.
61 * We assume these values have been applied via a fcs.
62 * If info is not 0 we also display the current settings.
63 */
64unsigned int get_clk_frequency_khz(int info)
65{
66 if (cpu_is_pxa25x())
67 return pxa25x_get_clk_frequency_khz(info);
68 else if (cpu_is_pxa27x())
69 return pxa27x_get_clk_frequency_khz(info);
70 return 0;
71}
72EXPORT_SYMBOL(get_clk_frequency_khz);
73
74/*
75 * Intel PXA2xx internal register mapping.
76 *
77 * Note: virtual 0xfffe0000-0xffffffff is reserved for the vector table
78 * and cache flush area.
79 */
80static struct map_desc common_io_desc[] __initdata = {
81 { /* Devs */
82 .virtual = 0xf2000000,
83 .pfn = __phys_to_pfn(0x40000000),
84 .length = 0x02000000,
85 .type = MT_DEVICE
86 }, { /* UNCACHED_PHYS_0 */
87 .virtual = 0xff000000,
88 .pfn = __phys_to_pfn(0x00000000),
89 .length = 0x00100000,
90 .type = MT_DEVICE
91 }
92};
93
94void __init pxa_map_io(void)
95{
96 iotable_init(ARRAY_AND_SIZE(common_io_desc));
97}